440 - First Engine Build Questions

Yes, match the new piston and pin weights to the old. And you will basically match the factory balance.

You need to make the head and piston decision together as combined they will determine your compression ratio. There are two aftermarket pistons (Speed Pro) that will be close in weight to your original pistons . The 2266 will have a compression distance of 1.99” and will be .080-0.090” in the hole. The 2355 will have a CD of 2.06” and be about 0.020” in the hole and have 7cc valve pockets. Heads will range from 75cc to 90cc and be iron or aluminum.

If in the budget, go right to aftermarket aluminum.